Originally Posted by House Doc
I am getting my son some driving lights to go on his bull bar for XMAS.
I was thinking about wiring the control side of the relay to operate when his fog lights are on. I would pull a fused circuit to supply the load of the lights themselves. My idea is the fog light switch would operate both sets of lights.
Any comments on this??
It's an idea but could be illegal (technically) in some states. Depending on which state you live in, you're only allowed to have 4 lights on at one time. Wiring them so the fog switch turns on driving lights, as well as the fogs would put you over. I doubt you'd get caught with this, but something to think about.
Another thing, driving lights and fogs have different functions, you shouldn't need to run both at once. Fogs are supposed to be low and wide, driving lights are supposed to have more distance and a more concentrated beam. I'd run them separately. I've got my driving lights wired to a second stock fog switch but they can only come on with the high beams.